linter: refactorings

(cherry picked from commit 18182e4bfd)

compiler/linter.nim

@@ -13,7 +13,7 @@ import
   strutils, os, intsets, strtabs
 
 import options, ast, astalgo, msgs, semdata, ropes, idents,
-  lineinfos, pathutils
+  lineinfos, pathutils, wordrecg
 
 const
   Letters* = {'a'..'z', 'A'..'Z', '0'..'9', '\x80'..'\xFF', '_'}
@@ -22,28 +22,6 @@ proc identLen*(line: string, start: int): int =
   while start+result < line.len and line[start+result] in Letters:
     inc result
 
-type
-  StyleCheck* {.pure.} = enum None, Warn, Auto
-
-proc overwriteFiles*(conf: ConfigRef) =
-  let doStrip = options.getConfigVar(conf, "pretty.strip").normalize == "on"
-  for i in 0 .. high(conf.m.fileInfos):
-    if conf.m.fileInfos[i].dirty and
-        (FileIndex(i) == conf.projectMainIdx):
-      let newFile = if false: conf.m.fileInfos[i].fullpath
-                    else: conf.m.fileInfos[i].fullpath.changeFileExt(".pretty.nim")
-      try:
-        var f = open(newFile.string, fmWrite)
-        for line in conf.m.fileInfos[i].lines:
-          if doStrip:
-            f.write line.strip(leading = false, trailing = true)
-          else:
-            f.write line
-          f.write(conf.m.fileInfos[i], "\L")
-        f.close
-      except IOError:
-        rawMessage(conf, errGenerated, "cannot open file: " & newFile.string)
-
 proc `=~`(s: string, a: openArray[string]): bool =
   for x in a:
     if s.startsWith(x): return true
@@ -95,7 +73,7 @@ proc beautifyName(s: string, k: TSymKind): string =
 
 proc differ*(line: string, a, b: int, x: string): string =
   let y = line[a..b]
-  if cmpIgnoreStyle(y, x) == 0 and y != x:
+  if y != x and cmpIgnoreStyle(y, x) == 0:
     result = y
   else:
     result = ""
@@ -125,8 +103,6 @@ proc nep1CheckDefImpl(conf: ConfigRef; info: TLineInfo; s: PSym; k: TSymKind) =
 template styleCheckDef*(conf: ConfigRef; info: TLineInfo; s: PSym; k: TSymKind) =
   if {optStyleHint, optStyleError} * conf.globalOptions != {}:
     nep1CheckDefImpl(conf, info, s, k)
-  when defined(nimfix):
-    if gStyleCheck != StyleCheck.None: styleCheckDefImpl(conf, cache, info, s, k)
 
 template styleCheckDef*(conf: ConfigRef; info: TLineInfo; s: PSym) =
   styleCheckDef(conf, info, s, s.kind)
@@ -159,32 +135,7 @@ proc styleCheckUse*(conf: ConfigRef; info: TLineInfo; s: PSym) =
   if oldName.len > 0:
     lintReport(conf, info, newName, oldName)
 
-proc checkPragmaUse*(conf: ConfigRef; info: TLineInfo; pragmaName: string) =
-  const inMixedCase = [
-    "noSideEffect", "importCompilerProc", "incompleteStruct", "requiresInit",
-    "sideEffect", "compilerProc", "lineDir", "stackTrace", "lineTrace",
-    "rangeChecks", "boundChecks",
-    "overflowChecks", "nilChecks",
-    "floatChecks", "nanChecks", "infChecks", "moveChecks",
-    "nonReloadable", "executeOnReload",
-    "deadCodeElim",
-    "compileTime", "noInit", "fieldChecks",
-    "linearScanEnd",
-    "computedGoto", "injectStmt",
-    "asmNoStackframe", "implicitStatic", "codegenDecl", "liftLocals"
-  ]
-  let name = pragmaName.normalize
-  for x in inMixedCase:
-    if x.normalize == name:
-      if pragmaName != x:
-        lintReport(conf, info, x, pragmaName)
-      return
-
-  let wanted = pragmaName.toLowerAscii.replace("_", "")
+proc checkPragmaUse*(conf: ConfigRef; info: TLineInfo; w: TSpecialWord; pragmaName: string) =
+  let wanted = canonPragmaSpelling(w)
   if pragmaName != wanted:
     lintReport(conf, info, wanted, pragmaName)
-
-
-template styleCheckUse*(info: TLineInfo; s: PSym) =
-  when defined(nimfix):
-    if gStyleCheck != StyleCheck.None: styleCheckUseImpl(conf, info, s)

compiler/pragmas.nim

@@ -778,7 +778,7 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: var int,
     let k = whichKeyword(ident)
     if k in validPragmas:
       if {optStyleHint, optStyleError} * c.config.globalOptions != {}:
-        checkPragmaUse(c.config, key.info, ident.s)
+        checkPragmaUse(c.config, key.info, k, ident.s)
       case k
       of wExportc:
         makeExternExport(c, sym, getOptionalStr(c, it, "$1"), it.info)

compiler/wordrecg.nim

@@ -44,7 +44,7 @@ type
     wImportCompilerProc,
     wImportc, wExportc, wExportNims, wIncompleteStruct, wRequiresInit,
     wAlign, wNodecl, wPure, wSideeffect, wHeader,
-    wNosideeffect, wGcSafe, wNoreturn, wMerge, wLib, wDynlib,
+    wNoSideEffect, wGcSafe, wNoreturn, wMerge, wLib, wDynlib,
     wCompilerproc, wCore, wProcVar, wBase, wUsed,
     wFatal, wError, wWarning, wHint, wLine, wPush, wPop, wDefine, wUndef,
     wLinedir, wStacktrace, wLinetrace, wLink, wCompile,
@@ -184,3 +184,37 @@ proc findStr*(a: openArray[string], s: string): int =
     if cmpIgnoreStyle(a[i], s) == 0:
       return i
   result = - 1
+
+proc canonPragmaSpelling*(w: TSpecialWord): string =
+  case w
+  of wNoSideEffect: "noSideEffect"
+  of wImportCompilerProc: "importCompilerProc"
+  of wIncompleteStruct: "incompleteStruct"
+  of wRequiresInit: "requiresInit"
+  of wSideEffect: "sideEffect"
+  of wCompilerProc: "compilerProc"
+  of wLineDir: "lineDir"
+  of wStackTrace: "stackTrace"
+  of wLineTrace: "lineTrace"
+  of wRangeChecks: "rangeChecks"
+  of wBoundChecks: "boundChecks"
+  of wOverflowChecks: "overflowChecks"
+  of wNilChecks: "nilChecks"
+  of wFloatChecks: "floatChecks"
+  of wNanChecks: "nanChecks"
+  of wInfChecks: "infChecks"
+  of wMoveChecks: "moveChecks"
+  of wNonReloadable: "nonReloadable"
+  of wExecuteOnReload: "executeOnReload"
+  of wDeadCodeElimUnused: "deadCodeElim"
+  of wCompileTime: "compileTime"
+  of wNoInit: "noInit"
+  of wFieldChecks: "fieldChecks"
+  of wLinearScanEnd: "linearScanEnd"
+  of wComputedGoto: "computedGoto"
+  of wInjectStmt: "injectStmt"
+  of wAsmNoStackFrame: "asmNoStackframe"
+  of wImplicitStatic: "implicitStatic"
+  of wCodegenDecl: "codegenDecl"
+  of wLiftLocals: "liftLocals"
+  else: specialWords[w]